Quitter automatically hides or quits distracting apps after periods of inactivity. I’ve found it tremendously helpful to my work efficiency to hide Slack and quit Tweetbot after 10 minutes.

(Tip: Keep them out of your Dock, too, so when they’re not running, their icons aren’t even visible.)

Quitter is available right here, for free and will likely never be in the Mac App Store due to, among other reasons, its inability to be sandboxed. (Believe me, I tried.) So in addition to the utility it provides, it’s also a learning experience for me to dip my toe into both Mac development and distributing software directly.